E-invoice Solution - e-invoice APIs For Developers

A Licensed GST Suvidha Provider - APIs enable automatically

Welcome to MasterGST ( A Licensed GST Suvidha Provider ) - e-invoice API Developers community and this portal intended and specifications are related to e-invoice APIs. This e-invoice API portal will also host Playful e-invoice API (REST API) and sandbox information and MasterGST e-invoice API Portal will be a one stop shop for developer's, who wanted to build innovative application for GST Returns & Filing Software , GST Accounting Software Tax payers, e-invoice API Integration with ERP's and Third party Software Integration. Please signup to get your own e-invoice API Sandbox / e-invoice API Testing keys.

Pricing Details:

For more details contact sales@mastergst.com +91 7901022478

Click here to download MasterGST Certificate. (13-02-2024 to 23-02-2025)
MasterGST SAP Add-on / Connector:

SAP Integration Made Easy Using MasterGST. Contact sales@mastergst.com +91 7901022478 | 040-48531992. for the integration.

Click Here for more information.

How to Start:
To use e-invoice API Sandbox Credentials Please follow below Steps :
  1. Sign-up with MasterGST - Sign up
  2. Login into MasterGST by clicking here.
  3. Click credentials on menu-bar,then click on e-invoice credentials then on the right side click on create. Credentials to create e-Invoice sandbox credentials
  4. You will get a popup please enter the required details like your name or your companay name in that and then submit
  5. Contact us on +91 7901022478 or sales@mastergst.com for e-Invoice Sandbox Username & Password
  • Click here to Watch e-Invoice API Demo Video
  • Click here to download SSL Certificate.
  • Click here to Download e-invoice API Reference Documentation.
  • Click here to download e-Invoice Error Codes.
  • Click here to download Generate IRN Attribute details.
  • Click here to download e-Invoice API Production credentilas creation process.

Enabled e - invoice Methods and You can test here

Use Base URL as: https://api.mastergst.com

Click Here for Generate IRN Payload

Note : Please use the Registered Email Id with MasterGST

Error Codes : Click here

State Codes : Click here

Additional Help : Please follow us on GSP/ASP Google Group

To Create e-invoice Sandbox Account click here

Download e-Invoice API Library Files

Download and unzip the file and open it with the related application.

Please Login/Sign up to download the files



Visual Fox Pro


Node JS

VB .Net


E INVOICE API Postman Collection